{"id":49,"date":"2025-03-12T07:26:52","date_gmt":"2025-03-12T07:26:52","guid":{"rendered":"https:\/\/luuk.rpds.nl\/?p=49"},"modified":"2025-12-02T14:23:49","modified_gmt":"2025-12-02T14:23:49","slug":"licht-light","status":"publish","type":"post","link":"https:\/\/luukdeweert.nl\/index.php\/2025\/03\/12\/licht-light\/","title":{"rendered":"Foveon black & white"},"content":{"rendered":"\n
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In mijn obsessieve zoektocht naar goede monochrome digitale fotografie zou Sigma Foveon technologie wel eens het antwoord kunnen zijn. In het bijzonder de sensoren van de DPxM (Merrill) serie leveren beelden zonder op nostalgische wijze te refereren aan filmtypes uit voorgaande tijden.
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In my obsessive search for good monochrome digital photography, Sigma Foveon technology might be the answer. In particular, the sensors of the DPxM (Merrill) series deliver a quality without referring in a nostalgic way to film types from previous times.<\/em>
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Veld, Pretz-en-Argonne<\/p>\n\n\n\n

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Al dat gemekker op het web over korte batterijduur, onhandige bediening, Sigma SPP software die klungelig werkt\u2026 hou op!. 50 jaar geleden leerde ik mijzelf fotograferen met een Praktica L, een losse belichtingsmeter en een Patterson tank om Tri-X in te ontwikkelen, dat was pas traag\u2026<\/p>\n<\/div>\n\n\n\n

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All that whining on the web about short battery life, clumsy controls, Sigma SPP software that works clumsily… stop it!. 50 years ago I taught myself to take pictures with a Praktica L, a separate exposure meter and a Patterson tank to develop Tri-X in, that was slow…<\/em><\/p>\n<\/div>\n<\/div>\n\n\n\n

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Mijn 3 Sigma DPxM camera’s (FF eq 28mm., 45mm. en 70mm.)

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Omdat de Foveonsensor geen CFA (kleurfilter)<\/a> heeft, noch een AA filter<\/a> nodig is, kan bij elke sensel (pixel-locatie) de volledige RGB luminantiewaarde worden uitgelezen. Interpolatie is niet nodig, dit maakt deze sensor in de praktijk een perfecte monochrome lichtwaardensensor! Dit leidt tot twee belangrijke voordelen: De scherpte bij hoge contrastovergangen (bv een dakrand tegen een felle lucht) wordt niet ontsierd door halo’s en de (micro)tonaliteit van de grijswaarden blijft optimaal bewaard.
EN DAT ERVAAR JE!
Ik zou het een soort zachte scherpte willen noemen\u2026
Bezoek de links onderaan dit bericht voor meer diepgaande technische uitleg.<\/p>\n\n\n\n

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Because the Foveon sensor does not have a CFA (colour filter) <\/a>nor does it need an AA filter<\/a>, the full RGB luminance value can be read at each sensel (pixel location). Interpolation is not necessary, which makes this sensor a perfect monochrome light value sensor in practice! This leads to two important advantages: The sharpness at high contrast transitions (e.g. a roof edge against a bright sky) is not marred by halos and the (micro)tonality of the grey values \u200b\u200bis optimally preserved.
AND YOU EXPERIENCE THAT!
I would like to call it a kind of soft sharpness…
Visit the links at the bottom of this message for more in-depth technical explanation.<\/em><\/p>\n\n\n\n

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Mezquita Chatedral

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Fort | Fortress

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Wijngaard | Vineyard

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Bovenste bos

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Vod | Clout

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Heg | Hedge

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Zucchini

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Zielen | Souls

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Verder lezen | Further reading:

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FOTO[GEN]ERELL<\/strong><\/a>
Foveon workflow: Looking for the Blue Channel trick for Quattro cameras

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Ice Cream Geometry<\/strong><\/a>
X-Trans vs Foveon \u2014 A (Mostly) Monochrome Photowalk.

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Ice Cream Geometry<\/strong><\/a>
An Ode to the Sigma Foveon Sensor

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DPREVIEW<\/strong><\/a>
What is the secret to Foveon Black and White?

Eric L. Woods<\/strong><\/a><\/p>\n\n\n\n

Bootleg Monochrome, Foveon Edition: Sigma sd Quattro + 30mm f\/1.4\u00a0Art

Ultrasomething<\/strong><\/a><\/p>\n\n\n\n

Sigma vs. Nerd (Part 2: The BW Merrill)<\/p>\n","protected":false},"excerpt":{"rendered":"

In mijn obsessieve zoektocht naar goede monochrome digitale fotografie zou Sigma Foveon technologie wel eens het antwoord kunnen zijn. In het bijzonder de sensoren van de DPxM (Merrill) serie leveren beelden zonder op nostalgische wijze te refereren aan filmtypes uit voorgaande tijden. In my obsessive search for good monochrome digital photography, Sigma Foveon technology might […]<\/p>\n","protected":false},"author":1,"featured_media":11,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-49","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-licht-light"],"_links":{"self":[{"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/posts\/49","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/comments?post=49"}],"version-history":[{"count":55,"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/posts\/49\/revisions"}],"predecessor-version":[{"id":762,"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/posts\/49\/revisions\/762"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/media\/11"}],"wp:attachment":[{"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/media?parent=49"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/categories?post=49"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/luukdeweert.nl\/index.php\/wp-json\/wp\/v2\/tags?post=49"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}